All parameters have default values, which can be overridden at the account level. To override default values at the account level, you must be an account administrator (i.e. user granted the ACCOUNTADMIN role).

In addition, the default values for session and object parameters can be overridden at each level in the parameter hierarchy.

Note that the level column in the output shows the value for the parameter is currently set at the account level.

This specifies that the default display format for all dates in a session will be DD/MM/YYYY instead of YYYY-MM-DD (e.g. 23/04/2016 instead of 2016-04-23). Note that this date display format is only the default and can be
overridden for any individual user or session.